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HCPEB作用下镀铝CoCrAlY涂层的高温氧化行为

韩志勇,韩剑,丘珍珍

韩志勇,韩剑,丘珍珍. HCPEB作用下镀铝CoCrAlY涂层的高温氧化行为[J]. 焊接学报, 2018, 39(2). DOI: 10.12073/j.hjxb.2018390046
引用本文: 韩志勇,韩剑,丘珍珍. HCPEB作用下镀铝CoCrAlY涂层的高温氧化行为[J]. 焊接学报, 2018, 39(2). DOI: 10.12073/j.hjxb.2018390046

HCPEB作用下镀铝CoCrAlY涂层的高温氧化行为

  • 摘要: 使用大气等离子喷涂在镍基高温合金表面制备CoCrAlY粘结层并蒸镀一定厚度的纳米铝膜,利用强流脉冲电子束辐照镀铝涂层表面. 采用高温氧化试验,观察并分析涂层的高温氧化行为. XRD结果表明,强流脉冲电子束辐照镀铝涂层表层快速氧化生成大量Al2O3;100 h氧化后,表层氧化物成分较为稳定,基本保持Al2O3较多. 尖晶石类氧化物较少的状态. 表面形貌分析结果表明,经过强流脉冲电子束辐照镀铝涂层在高温环境下能够保持表层的致密和完整,缺陷很少. 涂层表层含有大量均匀且较为致密的Al2O3能够有效抵御外界环境的进一步氧化,有较好的的抗高温氧化性能.
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  • 收稿日期:  2016-05-22

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